Assuming that this isn't an april fools joke: ady, you have done some amazing work and nobody will blame you if you simply don't have the energy for another massive project. God knows I can get tired of the movies just from watching them to much during a certain period, forcing me to take a long break. I couldn't even begin to imagine how tired you must be of Star Wars right now.

Still, I would urge you not to make up your mind permanently. Maybe take a long break; 6 months, 1 year maybe, or perhaps even longer. And then se how you feel about the project then. After all, ESB will not require as much work as ANH. But in the meantime, enjoy your break from Star Wars. You've certainly earned it.

(again assuming this isn't a joke).